Sökning: "spectral moments"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden spectral moments.

  1. 1. Anticipatory vowel-to-consonant coarticulation of Swedish voiceless fricatives [s], [ɕ] and [ɧ]

    Magister-uppsats, Stockholms universitet/Avdelningen för fonetik

    Författare :Lisa Thörn; [2022]
    Nyckelord :anticipatory coarticulation; fricatives; spectral moments; center of gravity; Swedish; vowel-to-consonant coarticulation; anticipatorisk koartikulation; frikativor; spektrala moment; svenska; vokal-till-konsonant ko- artikulation;

    Sammanfattning : In this thesis, anticipatory vowel-to-consonant coarticulation of Swedish fricatives [s], [ɕ], and [ɧ] was examined in isolated words and connected speech. 10 women and 10 men participated in the study, performing a production test where fricative-initial, real words were read as isolated words and in sentences. LÄS MER

  3. 2. Dispersion management and characterization of ultrashort laser pulses for the optimization of parametric processes

    Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Författare :Axel Elfving; [2019]
    Nyckelord :frequency resolved optical gating; optical parametric amplification; difference frequency generation; nonlinear optics; laser pulse compression; lasers; optics; Technology and Engineering; Physics and Astronomy;

    Sammanfattning : This thesis set out to continue the development of a short-wave infrared (SWIR) optical parametric amplifier (OPA). The system is based on a Yb-ber chirped pulse amplification (CPA) laser delivering 400 fs long pulses, centered around 1030 nm, at 200 kHz repetition rate and 40 W average power. LÄS MER

  4. 3. Large Eddy Simulation of Turbulent Flow over a Backward-Facing Step

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Edmond Shehadi; [2018]
    Nyckelord :;

    Sammanfattning : This work studies the effect of grid resolution and subgrid scale modeling on the predictive accuracy of Large Eddy Simulation. In particular, the problems considered are: turbulent flow over a backward-facing step and fully-developed turbulent channel flow. LÄS MER

  5. 4. Detecting clear-cut deforestation using Landsat data : a time series analysis of remote sensing data in Covasna County, Romania between 2005 and 2015

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Tudor Buhalau; [2016]
    Nyckelord :Landsat; BFAST; Covasna; Physical Geography and Ecosystem Analysis; deforestation; time series; NDVI; NDMI; Earth and Environmental Sciences;

    Sammanfattning : Forested areas represent a fundamental component of the environment. Deforestation and forest fragmentation represent a global issue mostly caused by human influence and Romania is not an exception. Nowadays forests cover approximately a third of Romania’s surface, meaning that the deforestation is a national issue. LÄS MER

  7. 5. The effect of realistic nuclear charge distributions on atomic levels and transitions

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Matematisk fysik

    Författare :Asimina Papoulia; [2015]
    Nyckelord :nuclear charge density distributions; nuclear radial moments; frequency isotope shift; isotope field shift; Physics and Astronomy;

    Sammanfattning : Analogue atomic spectral lines from different isotopes display a small shift in energy, commonly referred as the frequency isotope shift. One of the components of the isotope shift is the field shift, which depends on the extent and the shape of the nuclear charge density distribution. LÄS MER